Replace the tail light bulb(s) on a 1966 Chevrolet Corvette by accessing the lens assembly from the exterior and replacing the failed bulb.

Warnings

Tools required

Parts

• 1157 dual-filament tail light bulb × 1 — 1157

Preparation

1. Turn off the ignition and all light switches
2. Allow tail light bulbs to cool if recently illuminated
3. Park vehicle on level surface

Procedure

1. 1

   Locate tail light lens assembly
   Position yourself at the rear of the vehicle. The 1966 Corvette features four round tail light lenses, two per side, integrated into the rear body panel. Identify which bulb requires replacement based on which light is not functioning.
2. 2

   Remove lens retaining screws
   Using a Phillips screwdriver, remove the screws securing the tail light lens to the body (typically 3 on the 1966 Corvette). These screws are arranged around the perimeter of the round lens. Keep screws in a safe location to prevent loss.
3. 3

   Remove lens assembly
   Carefully pull the lens assembly straight out from the body. The lens may be sealed with a gasket; use gentle pressure to break any seal. Avoid twisting or prying excessively to prevent cracking the lens.
4. 4

   Remove failed bulb
   Locate the bulb socket inside the housing. Press the bulb straight in approximately 1/4 inch and rotate counterclockwise approximately 1/4 turn to unlock it from the bayonet-style socket. Pull the bulb straight out of the socket.
5. 5

   Inspect socket and housing
   Examine the socket for corrosion, damage, or heat discoloration. Check that the socket contacts are clean and springy. Inspect the lens gasket for deterioration or cracking. Clean any corrosion with a clean cloth if present.
6. 6

   Install new bulb
   Insert the new 1157 bulb into the socket. Ensure the bulb pins align with the socket slots. Press the bulb in and rotate clockwise approximately 1/4 turn until it locks into place. Verify the bulb is secure by gently tugging on it.
7. 7

   Test bulb operation
   Before reinstalling the lens, have an assistant turn on the tail lights and test the brake lights to verify proper bulb operation. If the lamp uses a dual-filament 1157 bulb, verify both the dim tail filament and bright brake filament illuminate; if it is a single-filament bulb, verify the single function operates correctly.
8. 8

   Reinstall lens assembly
   Position the lens assembly back into the body opening, ensuring the gasket is properly seated. Align the screw holes and carefully press the lens flush against the body. Install all lens retaining screws by hand initially, then tighten evenly to ensure proper sealing. Screws should be snug but not over-tightened to avoid cracking the lens.

Reassembly

1. Tighten lens screws in a cross pattern to distribute pressure evenly
2. Verify lens is seated flush with no gaps where moisture could enter

Verification

• Turn on the headlight switch to verify tail light illumination
• Have an assistant press the brake pedal to verify brake light function
• Check for proper light output and no flickering
• Verify the lens is securely mounted with no rattles or loose screws

More procedures for this vehicle